Hi and welcome to Arturia forums.
It's allready possible to open the individual applications you own inside Analog Lab. Just use the edit function.
Please refer to the manual section "3.4.3. Editing a preset" on page 27.
You can download manuals from here:
https://www.arturia.com/support/updates&manualsIs this what you are asking for?
I don't have a Arturia controller yet. Personally i would like it was possible to select presets directly inside a the application loaded inside Analog Lab. I don't think that's possible as it is. You can only step thru presets without cquiting the view of the loaded application. I think that's the same with a Arturia controller.
EDIT: If you mean to be able to load vst's that's not Arturias, then that's not possible now. And i think it require a system where other vendors presets can be created in a format to be used in Analog Labs preset browser system - like Arturias NKS system. Perhaps also require the vendors build a speciel plug-in to be used in analog lab, but perhaps not. And then the vendors need to make parameters in a way to use for Analog Labs macros and so on... I doubt this is only about Arturia to wan't to make this happen. Many DAWs allready have a way to combine multiple plugins in multiinstruments and such. EDIT END